[LSC] Add LOCAL_LICENSE_KINDS to external/libmpeg2

Added SPDX-license-identifier-Apache-2.0 to:
  Android.bp
  fuzzer/Android.bp
  test/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: If3d81b88411191983116ba93aa889473f96c4c8c
3 files changed